A scripting environment for parametric design in PROCESSING can be linked to the EnergyPlus building simulation tool to provide "quantitative insight into level of influence of each parameter under scrutiny, informing about changes altering, enhancing, or having only minor effect on performance." [Julien, 2012]. In this way, design intensions are balanced with performance aims right at the early design stages. In this project, the selected parameters are related to THE ENERGY PERFORMANCE of the building. The capacity to extract data related to CODE REQUIREMENTS and ENVIRONMENTAL PERFORMANCE is also integrated into the model.